Questions tagged [modification]

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9
votes
4answers
3k views

Can I safely drill a hole from the crown into the steerer in my carbon fork?

I want to install dynamo-powered USB charging apparatus inside my fork steerer. However, it's a carbon fork that has no exit at the crown for the dynamo wiring. Is it safe to drill a small hole (at ...
3
votes
4answers
135 views

Shave 1.85mm off to get an 11s road cassette onto a 10s hub

Does anyone have experience removing material to get an 11s road cassette onto a 10s hub? As per the hub standards, the difference between the width of a 10s and 11s freehub body is 1.85mm. The back ...
0
votes
1answer
108 views

How can I shorten the frame of a "Duchie shopper" bike?

The cycle is a "Duchie shopper". The bike is to big for my wife. Is it possible to shorten it for her? She is 5 ft (152 cm) tall. The bike has a 27 inch wheels. I want to shorten it by ...
-1
votes
2answers
47 views

Fitting ebike kit, changing rim diameter?

I have a 27.5 inch mountain bike, am wondering if I bought a 26 inch ebike kit would it work with the disc brakes because of the size difference? It's for the rear wheel.
0
votes
1answer
133 views

Slamming my stem considerations

I want to try a slammed stem but don't want to cut the steerer tube. Do I have to?
3
votes
6answers
2k views

Croozer bike trailer optimalisation for less tire detoriation

We love to travel by bike. Last summer we did a trip of about 650km on mostly asphalted roads (with quite some medium long climbs and descends) with our son in a bike trailer (type Croozer, see ...
6
votes
1answer
420 views

I want a bolt on crank, but dunno what terminology to use to find one

I want to place a crank on a bike at a different location than the one the bike is originally located. This is similar to what i want to do, this is an addon crank for a smaller person to pedal with a ...
6
votes
2answers
1k views

Can and should one install rivnuts into an aluminium frame?

I have an aluminium frame, and would like to add another bottle cage. But there are no mounts below the downtube. I've installed rivnuts into a steel frame before, which worked well. Can I install ...
-1
votes
3answers
197 views

Sidecar / pillion adaptable for standard push bike

I'm looking for an add-on sidecar / pillion to add on to an existing bike. This is so that I can transport someone around who doesn't want to walk too far as well as helping me keep fit. Reseach ...
3
votes
2answers
107 views

Sunglasses fogging on cool bright mornings - can I improve airflow?

My favourite riding sunglasses are my Bollé Mamba II safety sunglasses - they're light and wrap around properly while being by far the most comfortable ones I've found. They're also cheap. There ...
11
votes
4answers
3k views

To Cold Set or Not To Cold Set?

I have a Trek 620 (Reynolds 531 lugged steel frame) from the mid-80s the rear dropouts are spaced at 126 mm. I'd like to be able to run an 8- or 9-speed cassette and I was wondering about the issues ...
2
votes
3answers
742 views

How can I DIY a smaller Anything Cage/Versacage, or a mini bottle cage

In my perpetual quest to carry ever more stuff without panniers, I'd like to fit a second bottle cage under the downtube, for small bottles (e.g. 200 ml of stove fuel). There's space for ...
4
votes
3answers
17k views

How can I use a bent seatpost to move my cruiser's seat farther back?

I realize this isn't everyone's taste, but indulge me for a moment... I just bought a beater cruiser bike on craigslist, and I'm trying to move the seat farther towards the rear of the bike for a ...
6
votes
1answer
467 views

Modify a front derailleur cage to allow for non-round chainrings like Biopace or Rotor?

I am repairing my road bike after a mishap where it swallowed the rear derailleur around the cassette and into the front derailleur. As part of the rebuild, I'm swapping out the badly worn old ...
11
votes
3answers
11k views

What is the impact of changing to a smaller chainring?

My road bike has a Campagnolo Veloce gearset. It's running 53 and 39 tooth chainrings. I have a 13-25 10sp cassette. I find that a lot of the time when I'm cruising, I'm on the big chainring and in ...
1
vote
1answer
742 views

Bought a Vintage Bianchi 1985 road racer, came with Shimano 600, can I easily turn it into index shifting?

As my title says bought a: Bianchi 1985 vintage in almost mint condition Shimano 600, 12 speed (2x6) with freewheel, friction shifters I'd like to turn it into an index shifter. Do I just swap out ...
-3
votes
3answers
428 views

Which bicycle is the most hollow? [closed]

For the purpose of carrying water, gas, or whatever. What bike has the most volume in the hollow chambers of the bicycle frame? 1920's De Dion Bouton Propeller Bicycle https://www.carandclassic.co....
5
votes
4answers
4k views

Is it possible to convert a suspension fork to rigid by drilling it?

I have been given a Falcon MTB. I've sorted out all its troubles but the front suspension fork is worn. When using the front brake the slack in the tubes make them judder. Is there anyway I can "...
1
vote
3answers
113 views

Budget brands for gears in India [closed]

A total newbie here. I'm planning to upgrade a single speed to geared one road/tour bike. I haven't decided the gear system though. I guess I'll decide that upon availability of the parts. Well, I ...
4
votes
1answer
302 views

Identifying small, moped-like bike

I found a very cool and bizarre-looking bike in Berlin (in Germany) and was very confused about what it in fact "is"; Has anyone got an idea? — To me, it almost looks like some sort of ...
5
votes
3answers
953 views

What's this part of the bike, and is it safe to alter it?

The video shows someone installing a gps bike tracker, however there is not much room in the top of the head tube, so he hammers down what's already in there in order to make room for the tracker. In ...
9
votes
3answers
897 views

Modification for cycling with one functioning hand

My dad loves cycling, however he has dystonia which reduces control of the muscles in his hands. He can still cycle, however this becomes very painful after a moderate period of time due to gripping ...
1
vote
1answer
155 views

Modifying SKS Race Blade Long for solid axle hubs

I have a set of SKS Race Blade Long fenders. They have quick release attachments that fit around QR skewers. Unfortunately, I'd like to set these fenders up on my single speed commuter which has track ...
2
votes
1answer
539 views

Can regular bike forks be modified to allow front drivetrain setup?

Can regular bike forks be modified to allow front drivetrain setup? Some bikes have front drivetrains instead rear drivetrains. The problem is that bike stores don't seem to carry forks that have a ...
2
votes
1answer
217 views

Bike modifications against side winds

I am cycling on the highway these days, dealing with tremor of my handlebars or a slight loss of control resulting from either oncoming vehicles or the high winds. I'm wondering how pro cyclists ...
1
vote
1answer
896 views

Convert city bike to road bike [duplicate]

I have a city or normal bike and I want to ask, that with the necessary modification except the frame, is possible to convert this bike in a road bike?
1
vote
1answer
158 views

Durability of Seat and Chain Stays on steel frame touring bike

I've been toying with the idea of mounting a dynamo on my REI touring bike. Model is ADV1.1 and it has a steel frame. Dynamo attaches by a mechanism that clamps onto a seat stay and tightens with two ...
1
vote
3answers
3k views

Relation formula between fork length change to headtube angle and bottom bracket height

As we know, changing the fork length will change bike geometry a bit. For example, increasing fork travel by 10 cm will make the headangle slacker and raise the bottom bracket. I consider to increase ...
5
votes
1answer
1k views

Derailleur On A Single Speed

Earlier today, I saw this bike with an absolutely bizarre drive-train. It looks like a single speed, but it has a derailleur on attached to it. The derailleur does not move horizontally, but only ...
4
votes
3answers
11k views

How hard is it to remove a European-style rear-wheel ring lock?

I have an old Breezer Uptown 8 with a European-style ring lock on the rear wheel. I am thinking of removing it. Does anyone have experience doing this? Is it as easy as unscrewing a bolt? It looks ...
2
votes
1answer
249 views

Road bike commuting

I have a road bike (Orbea Aqua T23) on which many of the components are coming to the end of their lives. As such I'm replacing most of them, and was wondering what people thought were good mods to ...
5
votes
4answers
851 views

Downgearing with a road triple

My mother is trying to get back on her bike after years of knee problems + surgery, which so far has gone ok, but she has had some trouble with climbing hills. She's thinking that she should try to ...
0
votes
1answer
2k views

Finding the right size wheel for a electric bike kit [closed]

I want to convert my trek cross bike to a electric bike. I have 700c rear tire. The kits wheels seem to come in inches. What should I do?
2
votes
3answers
3k views

Is it possible to reverse cable direction in Shimano M770 shifter?

I tried to set up the perfect shifter + derailleur. For the last part it is better (for me) to have low-normal version, because reducing gears is essential for me (I bike mostly within city). So I ...
1
vote
1answer
1k views

Pedal assist sensor possible for front wheel motor on ebike?

I'm looking into converting my current bike into e-bike. I run with IGH, so the only place for the motor is the front wheel. Is it possible to have pedal assist sensor (PAS) with this setup? I.e. no ...
13
votes
1answer
24k views

Disabling back-pedal brake

I have a bike with the so-called back-pedal brake, but since it's for someone who's learning I think that it's more an obstacle than an advantage. Since the bike also has hand-actioned brakes, can I ...
9
votes
4answers
35k views

Is it possible/sensible to add a suspension fork to an old mountain bike?

I have a ~1993 Giant mountain bike. It's not great, but I am a very new and casual rider. The bike has a solid fork and it makes for the predictable rough trail ride. The trails are generally ...
11
votes
4answers
2k views

How to weight pedals?

I have some odd kind of track pedals on my bike. I believe they are clipless pedals; but for description, on one side they are flat and comfortable to pedal with. On the other side there is a raised ...
11
votes
2answers
4k views

Can I modify a slightly too big bike?

A couple of months ago I went for a professional bike fit on a jig. They were struggling to find a bike to fit me perfectly (5ft1 female). They ended up ordering me a cyclocross bike. The bike has ...
-1
votes
1answer
55 views

Bike site and links [closed]

Links to sites with a new or unique design is what I am looking for. Post the site with most links for bike related information.
5
votes
2answers
2k views

Is it possible to increase maximum seatpost insertion length by filing down a seat tube bottle cage mount boss?

I have an aluminum MTB hardtail frame with a pair of standard bottle cage holes on the seat tube. I want to insert a seatpost fairly deep into the frame sometimes, so that the saddle stays low. The ...
0
votes
1answer
1k views

Modifying Bikes 101 - Help (1988 Bridgestone City Limit CB-2)

1988 Bridgestone City Limit CB-2: Can I modify my bike with other parts or will that make it all funky? I know little to nothing about bikes but REALLY want to put some new parts on my bike. HANDSOME ...
12
votes
3answers
3k views

can only use right hand to brake reliably, due to disability - safer/possible to modify bike?

I'm new here and hoping someone might have thoughts on this - had a look and couldn't find an answer elsewhere! Apologies for the kind of long question, and if it's silly, but any thoughts would be ...
3
votes
1answer
604 views

Am I too tall to bother modifying my old trek?

I bought an old Trek 500 series road bike a couple months ago and have put love and parts into it but it's just too damn small for me (I'm 6'4"). All the post adjustments are at their safest limits. ...
0
votes
4answers
3k views

how to increace the friction between tyre and road [closed]

While designing a bicycle what are the designing factors to be considered to increase the friction to give more efficiency to the cycle.And what are the other factors that can be considered while ...
2
votes
1answer
2k views

Modify geared hub to fit a 110mm frame

I have a kids' 18" bike with a fixed gear and a coaster-brake. I would like to replace the rear hub with a (preferably 3-)geared hub with a coaster brake as it is the kind of brake my kid is most ...
3
votes
3answers
9k views

Replacing an 8-speed cassette with a 9-speed one to make my bike faster

I'd like to make my 8-speed tokyobike Classic Sport city bike go faster so I'm considering replacing the 8-speed cassette with a 9-speed one which can be found on the tokyobike Sport. The bike has ...
2
votes
2answers
240 views

Does anyone know of a machinist who could convert a dual ring Campy Nuovo Record chainset ('spider') to accept a 3rd chainring?

I have a 1971 Raleigh International whose Campagnolo Nuovo Record chainset has Campy pedals that are 'frozen' into their threads (I know, this is an instance of neglected maintenance). I really like ...
0
votes
1answer
275 views

Overmountain bike to downhill bike

I have a overmountain bike (Cannondale Trigger Lefty 27.5) with 140mm travel but I was wondering whether I can make a downhill bike out of it because I really want to ride downhill. The shock I have ...
1
vote
1answer
215 views

Recessing Look Cleats

A lot of SPD shoes (not SPD-SL) have the cleat recessed into the shoe so you can walk with it. Has anyone found a way to get Look Keo cleats to be recessed so they are better for walking? I suspect ...